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in afghanistan. >> reporter: he spent much of 2002 and 2003 near kandahar, hunting for taliban. he came back to harvard, but in 2009, with the national guard unit, he went back to afghanistan. >> and so i spent a lot of time with route clearance units looking for ieds and we got hit several times and vehicles in front of me blown up. my vehicle never got hit. i was very lucky. when you run up there and pull open the door of that mwrap and see your injured buddies you never forget that sight. >> reporter: this time back home he began to explore the science of brain injury. >> what happens when the brain gets hit by a blast wave and slams up against the inside of the skull. >> reporter: with colleagues at northeastern university parker built new tools to study how a blast affects the brain. it could be years before this leads to new treatments but parker hopes eventually will have a broad impact. >> concussions that your favorite football player suffers or the head injury you get when you're in a car accident and your head snaps forward or shaken baby syndrome, these are all examples of nonpen
Search Results 0 to 3 of about 4 (some duplicates have been removed)